“May the Force be with you!” is the iconic line from those iconic movies, but “May the Fourth Be With You” is the name of the daylong celebration today (May the Fourth) of all things Star Wars.

Staffers, visitors (above), and even some of the statuary in the Great Hall (right) were in costume, and Star Wars merchandise — from posters to Mr. Potato-Head-style toys — were on display.

Stacey Swigart, director of collections and content at the museum, says the Star Wars phenomenon has legs.

“There are a lot of parents who weren’t alive when the first Star Wars came out (in 1977) that we have coming in to visit today, so the phenomenon is just unbelievable. It just sort of has proliferated,” she notes.

One of the young visitors was Thomas, dressed as Luke Skywalker. Why Luke?

“Because he lasts ’til the last movie and he’s a good Jedi,” says Thomas (in center of photo).